Question

What is the % mass of a solution that contains 25 grams solute in 75 grams of solvent?Group of answer choices33.33%25%0.33%0.25%

Answer 1

ANSWER

The % mass of the solution is 25%

EXPLANATION

Given information

The mass of solute = 25 grams

The mass of solvent = 75 grams

To find the % mass of the solution, follow the steps below

Step 1: Find the mass of the solution

Recall, that solution is the summation of the solute and its solvent

Solution = solute + solvent

Hence, the mass of the solution is calculated below as

Mass of solution = mass of solute + mass of solvent

Mass of solution = 25 + 75

Mass of solution = 100 grams

Step 2: Find the % mass of the solution by using the formula below

$\begin{gathered} \text{ \% mass of the solution =}\frac{\text{ mass of solute}}{mass\text{ of solution}}\times\text{ 100\%} \\ \text{ \% mass of the solution = }\frac{25}{100}\times100\text{ \%} \\ \text{ \% mass of the solution = 0.25 }\times\text{ 100\%} \\ \text{ \% mass of the solution = 25\%} \end{gathered}$

Hence, the % mass of the solution is 25%

Option B